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I just picked up a late 80's ATT "Private Payphone Plus" and despite it having an LCD screen and keypad inside the phone, it looks like another COCOT I need unobtanium software to actually get it to do anything. I might (probably will) rip out the 36A controller and just stuff a Protel 4000 series board in there that can be programmed at the phone. But in the meantime, does anyone happen to have a copy of AT&T's coinsoft program so I can take a crack at programming this boat anchor?

Yeah, its been a minute.... Hello everyone!

Hi all,

I’m working with an NEC SV9100 connected to a Grandstream UCM via SIP trunk. Extension-to-extension dialing between the systems works fine. The SIP trunks are set to DDI type, nec side

Now I want to go a step further:
I’d like extensions on the Grandstream UCM to be able to dial external numbers using the PRI trunk connected to the SV9100. Essentially, the UCM will send the call via SIP to the SV9100, and the SV9100 will route it out through its PRI trunk, with no other user interaction.
Has anyone set up something similar?
How should I program the incoming call on sv9100 to achieve this?

Thanks in advance!